7072645 has 8 divisors (see below), whose sum is σ = 8626680. Its totient is φ = 5565120.

The previous prime is 7072631. The next prime is 7072649. The reversal of 7072645 is 5462707.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 7059649 = 114^2 + 2657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7072645 - 2⁵ = 7072613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11290 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (1078335).

Almost surely, 2^7072645 is an apocalyptic number.

It is an amenable number.

7072645 is a deficient number, since it is larger than the sum of its proper divisors (1554035).

7072645 is a wasteful number, since it uses less digits than its factorization.

7072645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23255.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 7072645 is about 2659.4444908665. Note that the first 4 decimals coincide. The cubic root of 7072645 is about 191.9525797966.

The spelling of 7072645 in words is "seven million, seventy-two thousand, six hundred forty-five".